How to find ALL of the x intercepts

The video tutorial explains how to find X intercepts by setting Y to 0 and solving the equation. It introduces the graphical approach to understanding the sine function, including its amplitude and range. The tutorial discusses the relationship between sine and angles, emphasizing the use of the unit circle. Finally, it explains how to find all X intercepts by considering the periodicity of the sine function and using coterminal angles.

What is the first step in finding the X-intercepts of a function?

• Set X equal to 0

• Set Y equal to 0

• Set the derivative to 0

• Set the function to 1

What is the range of the basic sine function?

• 0 to 1

• -1 to 1

• 0 to 2

• -2 to 2

How can you quickly sketch the sine graph if you forget its shape?

• Draw a straight line

• Use a calculator

• Use the derivative

• Refer to the unit circle

In which quadrants is the sine function negative?

• First and second

• Second and third

• Third and fourth

• First and fourth

What is the reference angle for an angle where sine equals -1/2?

• π/4

• π/3

• π/6

• π/2

What is the period of the sine function?

• 4π

• 3π

• 2π

• π

How do you express the repetition of X-intercepts in the sine function?

• Subtract 2π

• Subtract π

• Add 2π

• Add π